Logical
Coalesce (Any value1, Any value2)IsNotNull (AnyValue)IsRealNumber (AnyValue)IsValidSqlDate (Date)IsDate (AnyValue)If (Boolean)If (DateTime)If (Double)ExistsIf (Int64)If (String)IsDate (str, strformat)IsInteger (AnyValue)IsNullOrWhitespace (StringValue)IsNullorEmpty (StringValue)IsNull (AnyValue)IsNumeric (AnyValue)